A principle component or components of the immune system is/are the

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Quizplus · Accepted Answer

The spleen is part of the lymphatic system, which is a major component of the immune system. It filters blood and removes old or damaged red blood cells, as well as producing and storing white blood cells called lymphocytes. The skin and blood vessels have some protective functions against pathogens, but they are not considered primary components of the immune system. The thyroid gland is involved in hormone regulation and is not part of the immune system.

A Principle Component or Components of the Immune System Is/are